3100+ Mental Ability Reasoning Questions and Answers with Explanation

Q:

A girl counted in the following way on the fingers of her left hand : She started by calling the thumb 1, the index finger 2, middle finger 3, ring finger 4, little finger 5 and then reversed direction calling the ring finger 6, middle finger 7 and so on. She counted upto 1995. She ended counting on which finger ?

A) Thumb	B) Index finger
C) Ring finger	D) Middle finger

Answer & Explanation Answer: D) Middle finger

Explanation:

Clearly, while counting the numbers associated to the thumb will be 1,9,17,25,.........
i.e., numbers of the form (8n + 1 ).
where n=1,2,3...
Since 1994 = 249 × 8 + 2, so 1993 shall correspond to the thumb and 1994 to the index finger and 1995 to the middle finger.

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Filed Under: Arithmetical Reasoning
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

9 12967

Q:

A man has a certain number of small boxes to pack into parcles. If he packs 3, 4, 5 or 6 in a parcel, he is left with one over; if he packs 7 in a parcle, none is left over. What is the number of boxes, he may have to pack?

A) 106	B) 301
C) 309	D) 400

Answer & Explanation Answer: B) 301

Explanation:

Clearly, the required number would be such that it leaves a remainder of 1 when divided by 3, 4, 5, or 6 and no remainder when divided by 7. Thus, the number must be of the form (L.C.M of 3, 4, 5, 6) x + 1 i.e., (60x + 1 ) and a multiple of 7. Clearly, for x = 5, the number is a multiple of 7. So the number is 301.

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Filed Under: Arithmetical Reasoning

42 12963

Q:

Find the missing (?) in the series.

9, 4, 16, 6, 36, 9, 81, ?

A) 12	B) 10
C) 11	D) 13

Answer & Explanation Answer: D) 13

Explanation:

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Filed Under: Number Series
Exam Prep: Bank Exams

7 12955

Q:

From the given words, select the word which cannot be formed using the letters of the given word.

PREACHER

A) RECAP	B) PARCH
C) PEACH	D) CARES

Answer & Explanation Answer: D) CARES

Explanation:

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Filed Under: Logical Sequence of Words
Exam Prep: Bank Exams

1 12946

Q:

How many brothers does Tarun have ?

I. Tarun's father has three children.

II. Tarun has two sisters.

A) If the data in statement I alone are sufficient to answer the question	B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question;	D) If the data in both the statements together are needed.

Answer & Explanation Answer: D) If the data in both the statements together are needed.

Explanation:

From both the statements together, we find that Tarun's father has three children — Tarun and his two sisters This means that Tarun has no brother.

So, both I and II are needed.

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Filed Under: Data Sufficiency

7 12945

Q:

Genuine : Authentic : : Mirage : ?

A) Transpiration	B) Illusion
C) Reflection	D) Image

Answer & Explanation Answer: B) Illusion

Explanation:

Here the given pair of words are related in such a way that they are synonyms.

That is Genuine and Authentic are synonyms and similarly, Mrage and illusion are synonyms.

Hence, Genuine : Authentic : : Mirage : Illusion.

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Filed Under: Analogy
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

9 12936

Q:

It is 8.00 p.m., when can Hemant get next bus for Ramnagar from Dhanpur ?

I. Buses for Ramnagar leave after every 30 minutes, till 10 p.m.

II. Fifteen minutes ago, one bus has left for Ramnagar.

A) If the data in statement I alone are sufficient to answer the question	B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question;	D) If the data in both the statements together are needed.

Answer & Explanation Answer: D) If the data in both the statements together are needed.

Explanation:

II reveals that the previous bus had left al 7.45 p.m

As given in I, the next has would leave after 30 minutes i.e, at 8.15 p.m.

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Filed Under: Data Sufficiency

5 12923

Q:

Arrange the given words in the sequence in which they occur in the dictionary.

1. Journey

2. Judge

3. Jingling

4. Jingle

5. Judgement

A) 32541	B) 53142
C) 43125	D) 15342

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